CN113093403A - Stereoscopic image display method and display device - Google Patents
Stereoscopic image display method and display device Download PDFInfo
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- CN113093403A CN113093403A CN201911334379.9A CN201911334379A CN113093403A CN 113093403 A CN113093403 A CN 113093403A CN 201911334379 A CN201911334379 A CN 201911334379A CN 113093403 A CN113093403 A CN 113093403A
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- 238000013507 mapping Methods 0.000 claims abstract description 5
- 239000011521 glass Substances 0.000 claims description 9
- 238000004891 communication Methods 0.000 claims description 3
- 206010047571 Visual impairment Diseases 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 11
- 238000003384 imaging method Methods 0.000 description 5
- 230000003993 interaction Effects 0.000 description 4
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
- G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
- G03H1/22—Processes or apparatus for obtaining an optical image from holograms
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Abstract
The invention provides a stereo image display method and a display device, wherein the method comprises the following steps: making the projection device and the projection carrier do relative reciprocating motion to form a first image; and carrying out secondary projection on the first image to form a three-dimensional holographic projection. The display device includes: a box body; the projection part is arranged in the box body and is used for generating a projection image in the box body; and a holographic display part for mapping the projection image outside the case; the projection part comprises a projection device and a projection carrier, the projection device and the projection carrier do high-speed reciprocating motion relatively, the projection device forms a projection image through the projection carrier, and the holographic display part maps the projection image to form holographic projection. By the three-dimensional image display method, 3D projection of the object can be realized, physical signs of the object can be reflected truly, and the three-dimensional image after holographic projection is not an image formed based on a human eye ghost, so that touch control can be performed.
Description
Technical Field
The present invention relates to the field of holographic imaging technology, and particularly to a method and a device for displaying a stereoscopic image.
Background
The holographic projection technology belongs to a 3D technology, originally refers to a technology for recording and reproducing a real three-dimensional image of an object by utilizing an interference principle, and then the concept of holographic projection gradually extends to commercial activities such as stage performance, exhibition and the like along with the guidance of science fiction movies and commercial propaganda. The holographic technology can be subdivided into optical holographic technology, digital holographic technology, computer holographic technology, microwave holographic technology, reflection holographic technology, acoustic holographic technology and the like, and is widely applied to various fields of display, measurement, encryption, identification and the like.
Most of the existing holographic systems can only image one surface in the air, the surface looks like the same picture at different angles, the 3D characteristics of an object cannot be truly reflected, and some holographic systems can also do high-speed reciprocating motion on a display screen, for example, the display screen does high-speed reciprocating motion at the speed of 30 times per second, and due to the influence of afterimage of human eyes, a three-dimensional image can be presented, but the three-dimensional image is an image formed based on the afterimage of human eyes, is not a three-dimensional image in nature, is still a plane image at each moment, cannot be touched, and cannot meet more display requirements.
Disclosure of Invention
The invention aims to provide a three-dimensional image display method and a display device, which can realize 3D projection of an object, are beneficial to truly reflecting physical signs of the object, and can perform touch control because a three-dimensional image after holographic projection is not an image formed by afterimages of human eyes.
The technical scheme provided by the invention is as follows:
a stereoscopic image display method, comprising the steps of:
making the projection device and the projection carrier do relative reciprocating motion to form a first image; and carrying out secondary projection on the first image to form a three-dimensional holographic projection.
The projection device and the projection carrier can form a projection image, and the projection device and the projection carrier can relatively reciprocate to form a first image, but the three-dimensional afterimage is a three-dimensional image formed by afterimage imaging, is still a plane image at each moment and cannot be touched, a new three-dimensional holographic projection can be formed by carrying out secondary projection on the projection image, and the formed holographic projection can be touched.
Further, acquiring a first space position coordinate of a human body or other tools touching the holographic projection;
calculating or acquiring a second spatial position coordinate of the holographic projection;
and comparing the second spatial position coordinate with the first spatial position coordinate to obtain the coordinates of the contact point of the human body or other tools and the holographic projection.
When the first spatial position coordinate is acquired, the first spatial position coordinate of a touched human body or other tools can be identified through a touch identification part, such as a TOF identifier and the like, the second spatial position coordinate of the holographic projection can be obtained through calculation of a controller and the like, the second spatial position coordinate can also be determined in advance and input into the controller again, the second spatial position coordinate and the first spatial position coordinate are compared, the contact point coordinate of the human body or other tools and the holographic projection can be acquired, and therefore touch control is convenient to perform.
In addition, the present invention provides a stereoscopic image display device including:
a box body;
a projection unit mounted in the cabinet for generating a projection image in the cabinet; and
a holographic display unit for mapping the projection image outside the cabinet;
the projection part comprises a projection device and a projection carrier, and the projection device and the projection carrier do high-speed reciprocating motion relatively;
the projection device emits a projection light source during projection, the projection light source forms a three-dimensional projection image through the projection carrier, and the holographic display part maps the projection image to the other side of the holographic display part to form three-dimensional holographic projection.
Can form the projection image earlier in the box through projection arrangement and projection carrier, rethread drive projection carrier and projection arrangement do relative high-speed reciprocating motion, can make the projection image present for the stereographic image, map the projection image through holographic display part at last, can form three-dimensional holographic projection in the outside of box, and the three-dimensional of holographic projection that forms is not relying on the incomplete shadow of people's eye, therefore the 3D characteristic of reflection object that can be better, and can touch-control, can satisfy more demonstration demands.
Further, still include:
a touch recognition unit for recognizing a first spatial position coordinate of a human body or other tool touching the hologram projection;
and the controller is in communication connection with the touch identification part and is used for calculating or acquiring a second spatial position coordinate of the holographic projection, comparing the second spatial position coordinate with the first spatial position coordinate and acquiring a contact point of a human body or other tools and the holographic projection.
By identifying the spatial position coordinates of the human body or other tools contacting the holographic projection and comparing the spatial position coordinates with the spatial position coordinates of the holographic projection, whether the human body or other tools contact the holographic projection or not and the specific contact position can be determined, so that the interaction between the outside and the holographic projection is facilitated.
Further, the touch recognition part is a TOF recognizer.
Furthermore, the shooting direction of a camera of the TOF recognizer is perpendicular to the placing direction of the holographic display part.
Set up the shooting direction through the camera with TOF recognizer as with holographic display portion put the direction perpendicular, the space position coordinate of the human body of discernment contact holographic projection that can be more accurate or other instruments to improve the judgement precision of contact point.
Further, the controller is connected with an ultrasonic transmitter, and the ultrasonic transmitter is used for transmitting ultrasonic waves to the contact point.
The ultrasonic transmitter is controlled to transmit ultrasonic waves to the contact point, so that a human body in contact with holographic projection can feel pressure, real touch is generated, and interaction with the holographic projection is facilitated.
Furthermore, an accommodating cavity is formed in the box body, and the projection device is installed at the bottom of the accommodating cavity;
the projection carrier is a projection film, and the projection film is positioned right above the projection device.
Furthermore, slide rails are arranged in the box body and are arranged on two sides of the inner wall of the accommodating cavity,
a fixed bracket is arranged on the outer side of the projection film, sliding connecting pieces matched with the sliding rails are arranged at the two ends of the fixed bracket,
the fixed support is connected with a driving part, and the driving part drives the projection film to do high-speed reciprocating motion along the sliding rail.
By controlling the projection carrier to do high-speed reciprocating motion along the slide rail, the projection image formed in the box body can be a three-dimensional image so as to be conveniently mapped to the other side of the holographic display part.
Further, the projection device and the projection carrier do relative high-speed reciprocating motion at a speed of at least 60 times per second;
and/or;
the holographic display part comprises holographic glass, and the holographic glass is installed at the top end of the box body.
The projection image can be formed through the projection device and the projection carrier, the projection device and the projection carrier can do relative high-speed reciprocating motion, the three-dimensional afterimage can be formed, however, the three-dimensional afterimage is a three-dimensional image formed based on afterimage imaging, the three-dimensional afterimage is still a plane image at each moment and cannot be touched, a new three-dimensional holographic projection can be formed by performing secondary projection on the projection image, and the formed holographic projection can be touched, so that the 3D characteristics of an object can be better reflected, and more display requirements can be met.
Drawings
The foregoing features, technical features, advantages and embodiments of the present invention will be further explained in the following detailed description of the preferred embodiments, which is to be read in connection with the accompanying drawings.
Fig. 1 is a schematic flow chart of a stereoscopic image display method according to an embodiment of the present invention.
Fig. 2 is a schematic view of an overall structure of a stereoscopic image display device according to an embodiment of the present invention.
In the figure: 10-box body, 11-containing cavity; 20-a projection unit; 21-a projection device; 22-a slide rail; 23-a projection carrier; 24-a fixed support; 25-a sliding connection; 30-a holographic display; 31-holographic glass.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
An embodiment of the present invention, as shown in fig. 1, is a stereoscopic image display method, including the steps of:
s100, the projection device and the projection carrier do relative reciprocating motion to form a first image.
The projection device is a projector, a display screen and the like, the projection carrier is a projection film, projection glass and the like, and the projection carrier can do high-speed reciprocating motion by making the projection device and the projection carrier do relative reciprocating motion, such as fixing the projection device; or the projection carrier is fixed, so that the projection device does high-speed reciprocating motion; or the projection device and the projection carrier move simultaneously and do relative reciprocating motion, so that a moving image can be formed, and the three-dimensional image is formed under the influence of the afterimage of human eyes.
And S200, carrying out secondary projection on the first image to form a three-dimensional holographic projection.
The projection device and the projection carrier can form a projection image, the projection device and the projection carrier can move back and forth relatively, a first image can be formed, for example, a projector, a display screen and the like can move back and forth relatively, and a stereoscopic image can be presented in the view of the outside based on the influence of human eye ghost.
And then, by carrying out secondary projection on the first image, for example, by holographic glass mapping, a new three-dimensional holographic projection can be formed, the formed holographic projection is no longer a residual image, and is a complete three-dimensional image at each moment, which can be called as medium-free imaging and can be touched, so that touch control can be carried out, the spatial characteristics of an object can be better reflected, and the display of the image can be more flexible.
In an embodiment of the present invention, a stereoscopic image display method further includes:
acquiring a first space position coordinate of a human body or other tools touching the holographic projection; calculating or acquiring a second spatial position coordinate of the holographic projection; and comparing the second spatial position coordinate with the first spatial position coordinate to obtain the coordinates of the contact point of the human body or other tools and the holographic projection.
When the first spatial position coordinate is acquired, the first spatial position coordinate of a touched human body or other tools can be identified through a touch identification part, such as a TOF identifier and the like, the second spatial position coordinate of the holographic projection can be obtained through calculation of a controller and the like, the second spatial position coordinate can also be determined in advance and input into the controller again, the second spatial position coordinate and the first spatial position coordinate are compared, the contact point coordinate of the human body or other tools and the holographic projection can be acquired, and therefore touch control is convenient to perform.
One embodiment of the present invention, as shown in fig. 2, provides a stereoscopic image display device including a case 10, a projection unit 20, and a hologram display unit 30.
The cabinet 10 has a rectangular parallelepiped structure, the cabinet 10 is provided with a receiving chamber 11 therein, the projection unit 20 is mounted in the receiving chamber 11 of the cabinet 10 and generates a projection image in the cabinet 10, and the hologram display unit 30 is configured to map the projection image outside the cabinet 10 to form a stereoscopic hologram projection.
The projection unit 20 includes a projection device 21 and a projection carrier 23, the projection device 21 and the projection carrier 23 reciprocate relatively at a high speed, the holographic display unit 30 includes a holographic glass 31, and the holographic glass 31 is mounted at the top end of the cabinet 10.
The projector 21 is a projector, the projector 21 emits a projection light source when projecting, the projection light source forms a projection image through the projection carrier 23, and the holographic display unit 30 forms a holographic projection by mapping the projection image to the other side of the holographic display unit 30.
The projection device 21 and the projection carrier 23 can form a projection image in the box body 10, the projection device 21 and the projection carrier 23 move back and forth relatively at a high speed, the projection image can be presented as a three-dimensional image, finally the projection image is mapped through the holographic display part 30, and a three-dimensional holographic projection can be formed outside the box body 10, for example, the adjustable range of the three-dimensional projection image formed in the box body 10 is 200 mm, and the adjustable range of the holographic projection mapped above the box body 10 through the holographic display part 30 is 200 mm, meanwhile, the formed holographic projection does not depend on the afterimage of human eyes, but is a real three-dimensional image, and is imaging without a medium, so that the 3D characteristic of an object can be better reflected, touch control can be carried out, and more display requirements can be met.
Specifically, the projection device 21 is installed at the bottom of the accommodating cavity 11, the projection carrier 23 may be a projection film, etc., the projection carrier 23 is located right above the projection device 21, the sliding rail 22 is installed in the box 10, the sliding rail 22 is installed at two sides of the inner wall of the accommodating cavity 11, the outer side of the projection carrier 23 is provided with a fixing support 24, two ends of the fixing support 24 are both provided with a sliding connection piece 25 matched with the sliding rail 22, the fixing support 24 is connected with a driving part (not shown in the drawings), the driving part may be a motor, an air cylinder, etc., and can drive the projection carrier 23 to reciprocate at a high speed along the sliding rail 22, and by controlling the projection carrier 23 to reciprocate at a high speed along the sliding rail 22, a projection image formed in the box 10 can be a stereoscopic image, so.
In other embodiments, the projection carrier 23 may be fixed, and the driving unit may drive the projection device 21 to reciprocate at a high speed, so as to form a three-dimensional projection image in the housing 10; the projection device 21 and the projection carrier 23 can be moved simultaneously to make the projection device 21 and the projection carrier 23 reciprocate relatively at a high speed, so as to form a three-dimensional projection image in the box 10.
Preferably, the projection device 21 and the projection carrier 23 reciprocate relatively at a high speed at a speed of at least 60 times per second, so that the projected image formed within the cabinet 10 appears as a stereoscopic image.
Further, the stereoscopic image display device provided by the present invention further includes a touch recognition portion and a controller (not shown in the drawings). The touch recognition part is used for recognizing the first space position coordinate of the human body or other tools touching the holographic projection; the controller is a calculation host, a CPU, a processor and the like, is in communication connection with the touch recognition part, and is used for calculating or acquiring a second spatial position coordinate of the holographic projection, comparing the second spatial position coordinate with the first spatial position coordinate, and acquiring a contact point of a human body or other tools and the holographic projection.
By identifying the spatial position coordinates of the human body or other tools contacting the holographic projection and comparing the spatial position coordinates with the spatial position coordinates of the holographic projection, whether the human body or other tools contact the holographic projection or not and the specific contact position can be determined, so that the interaction between the outside and the holographic projection is facilitated.
Specifically, the touch recognition portion may be a TOF recognizer, a gesture recognition sensor, an infrared reflection gesture recognizer, and the like, and the TOF recognizer may be installed at the top end of the box body 10, or may be installed obliquely above the box body 10, so as to be able to recognize spatial position coordinates of a human body or other tools contacting the holographic projection.
The shooting direction of the camera of TOF recognizer is perpendicular with holographic display 30's the orientation of putting, sets up the shooting direction through the camera with TOF recognizer as perpendicular with holographic display 30's the orientation of putting, and the discernment that can be more accurate contacts the spatial position coordinate of holographic projected human body or other instruments to improve the judgement precision of contact point.
Further, the controller is connected with an ultrasonic transmitter, the ultrasonic transmitter is installed on the top end or the oblique upper side of the box body 10 and used for transmitting ultrasonic waves to the contact points, the ultrasonic transmitter is controlled to transmit the ultrasonic waves to the contact points, a human body in contact with holographic projection can feel pressure feeling, real touch feeling is generated, and interaction with the holographic projection is facilitated.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A stereoscopic image display method characterized by: making the projection device and the projection carrier do relative reciprocating motion to form a first image; and carrying out secondary projection on the first image to form a three-dimensional holographic projection.
2. The stereoscopic image display method according to claim 1, characterized in that:
acquiring a first space position coordinate of a human body or other tools touching the holographic projection;
calculating or acquiring a second spatial position coordinate of the holographic projection;
and comparing the second spatial position coordinate with the first spatial position coordinate to obtain the coordinates of the contact point of the human body or other tools and the holographic projection.
3. A stereoscopic image display apparatus, comprising:
a box body;
a projection unit mounted in the cabinet for generating a projection image in the cabinet; and
a holographic display unit for mapping the projection image outside the cabinet;
the projection part comprises a projection device and a projection carrier, and the projection device and the projection carrier do high-speed reciprocating motion relatively;
the projection device emits a projection light source during projection, the projection light source forms a three-dimensional projection image through the projection carrier, and the holographic display part maps the projection image to the other side of the holographic display part to form three-dimensional holographic projection.
4. The stereoscopic image display apparatus according to claim 3, further comprising:
a touch recognition unit for recognizing a first spatial position coordinate of a human body or other tool touching the hologram projection;
and the controller is in communication connection with the touch identification part and is used for calculating or acquiring a second spatial position coordinate of the holographic projection, comparing the second spatial position coordinate with the first spatial position coordinate and acquiring a contact point of a human body or other tools and the holographic projection.
5. The stereoscopic image display apparatus according to claim 4, wherein: the touch recognition part is a TOF recognizer.
6. The stereoscopic image display apparatus according to claim 5, wherein: and the shooting direction of a camera of the TOF recognizer is vertical to the placing direction of the holographic display part.
7. The stereoscopic image display apparatus according to claim 4, wherein:
the controller is connected with an ultrasonic transmitter, and the ultrasonic transmitter is used for transmitting ultrasonic waves to the contact point.
8. A stereoscopic image display apparatus according to claim 3, characterized in that: an accommodating cavity is formed in the box body, and the projection device is installed at the bottom of the accommodating cavity;
the projection carrier is a projection film, and the projection film is positioned right above the projection device.
9. A stereoscopic image display apparatus according to claim 8, wherein: the box body is internally provided with slide rails which are arranged at two sides of the inner wall of the containing cavity,
a fixed bracket is arranged on the outer side of the projection film, sliding connecting pieces matched with the sliding rails are arranged at the two ends of the fixed bracket,
the fixed support is connected with a driving part, and the driving part drives the projection film to do high-speed reciprocating motion along the sliding rail.
10. A stereoscopic image display apparatus according to any one of claims 3 to 9, characterized in that: the projection device and the projection carrier do relative high-speed reciprocating motion at a speed of at least 60 times per second;
and/or;
the holographic display part comprises holographic glass, and the holographic glass is installed at the top end of the box body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911334379.9A CN113093403A (en) | 2019-12-23 | 2019-12-23 | Stereoscopic image display method and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911334379.9A CN113093403A (en) | 2019-12-23 | 2019-12-23 | Stereoscopic image display method and display device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561746A (en) * | 2009-05-26 | 2009-10-21 | 上海大学 | Holographic photoelectric representation virtual image real-time interactive display unit |
| CN107908282A (en) * | 2017-11-07 | 2018-04-13 | 上海理工大学 | Line holographic projections can touch-control system device |
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- 2019-12-23 CN CN201911334379.9A patent/CN113093403A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101561746A (en) * | 2009-05-26 | 2009-10-21 | 上海大学 | Holographic photoelectric representation virtual image real-time interactive display unit |
| CN107908282A (en) * | 2017-11-07 | 2018-04-13 | 上海理工大学 | Line holographic projections can touch-control system device |
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Application publication date: 20210709 |